Oil-well rig.



R. R. POLLAK.

OIL WELL RIG.

APPLICATION FILED MAY 1a. 1914.

Patented Oct. 23, 1917.

2 SHEETSSHEET 1.

IN VEN TOR. Ziobert 2?.POZialt.

WITNESSES: I

. flG/ ATTORNEY R. R. POLLAK.

OIL WELL RIG.

APPLICATION men MAY 18. 1914.

Patented Oct. 23, 1917.

2 SHEETS-SHEET 2.

I N VEN TOR. Robert 18 .fiouak fdy4.

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A TTORNE Y Specification of Letters Patent.

Patented (Pet. 23, 191?,

Application filed May 18, 191%. Serial No. 889,268.

To all whom it may concern.

Be it known that I, 'RoBERT R. PoLLAK, a citizen of the United States, residing at San Francisco, in the county of San Francisco and State of California, have invented new and useful Improvements in Oil-Well Rigs, of which the following is a specification.

The present invention relates to improvements'ln oil well rigs, the object of the invention being to provide means whereby the walking beams of such rigs can be supported, 'upon the samson posts at various heights so as'to allow a plurality of standard or shorter joints of the casing to be lowered into position at the same operation, thereby facilitating drilling in cavy or other formations, and subsequently allowing of the pumping of the well with the same equipment, thus saving time and expense. A furtherobject of the invention is to provide means whereby the travel, blow or kick of the outboard or derrick end of the beam can be varied without altering-its lateral or longitudinal location or the positions of the supporting or hoisting posts. A further object of the invention is to provide improved long link armsfor casing hangers adapted for usewith the above improved means for supporting walking beams.

1n the accompanying drawings, Figure 1 is a broken side elevation of my improved deep well rig; Fig. 2 is an enlarged side view of means for pivotally supporting a walklng beam; Fig. 3 is a broken side elevation taken at right angles to that of Fig. 1; Fig. 4 is a broken side view of a casing hanger; Fig. 5 is a broken edge view of the same partly in section; Fig. 6 is a side view of a modified form of walking beam; Fig. 7 is an enlarged cross-sectional view of thesame.

Referring to the drawing, 1 indicates .a-

derrickframe, and 2 a truss-work samson post at the side of said frame, having an upper section 3, and section .by a spliced frame 4, removable, so that theupper section ofthe samson'post can'be detached from the lower section. The lower section of said post is 6, and the upper section .3 is also braced by bars 7. Said bars 7 and otherelements connected to, orsupported on, said upper section can be removed at one time with the upper section when required foruse in a drilhng operation in another location, leaving the lower section of the samson post, the

secured to the lower braced by bars.

lower beam and accessories intact for pump- I ing and other necessary work, and can be reinstalled when further or deeper drilling operations are required. This construction decreases the expense of installation. Secured at the sides of said post 2, are upper and,

lower pairs of reinforcing plates 9 having holes 12 through which the trunnions '14 extend, and upon which are secured angleplates 10 supportingjournal boxes 13. In said boxes 13 are .trunnions 14, extending from trunnion bearings 15 adjustably se-' cured by means of series of holes 19 to reinforcing plates 16 secured to the sides of upper and lower walking beams 17 either in the form of I-beams', as shown in Figs. 1 and 2, or of the box girder type, as shown in 7 Figs. 6 and 7 which walking beams and reinforcing plates are longitudinally slotted, as shown at 18, the walking beams extending through the samson post, which is provided above and below the same with-transverse strengthening plates 8. 1 i

To the outerends of said walkingbeams are secured respectively long and shortpitmen 21, 22, the lower ends of which are'secured to the end of a crank arm'23 on the shaft 24 of a wheel 25 driven byanengine int'he usual manner. '20-indicates fioorings or,- decks below the beam bearings for the purpose of conveniently adj ustingsaid bear- The object of providing adjustable bearfi ings is to vary the Eek, travel and. throw of theouter end of the beam according to the desire ofthe driller. Moreover the fact that theworking arm of the Walking beam is longer than the power arm causes the oscillation of the derrick end of the beam to be more nearly rectilinear. H 26 indicates a support for a headache I supported upon the side of the derrick,lw ich supports the upper walking beam when it. detached from the pitman, and whichcan be swung out of-the way w 'hen not in use, thus allowingmore available walking space and less'interference inside the. derrick'frame below the upper'beam. 27 indicatesa lower headache post, for supporting, the; lower walking beam, braced to. corners of the derrick at the top of the post bybraces 28.

29 indicates .a platform having counterweights 31, and resting upon-an I-beam 32 secured to vertical beams 33, the upper and lower ends of which are secured to horizon,

tal beams 34 extending inwardly from the side of the derrick. The platform is hinged,

supported when in use by chains 37, of

hanging in which the lower ends are secured to the outer end of the platform and the upper ends are secured to the derrick, said chains loops when the platform is not When hoisted from its horizontal position freeaccess is obtained to the space in its proximity, and when reestablished in its usual horizontal position, it is below the upper beam 17 at such a level that the driller can use it as a suitable station for operating the temper screw, brakes, control and the like. The platform'may be either one swung from one side, as shown, or may consist of two swung from opposite sides to meet each other and make a complete floor at the section of the derrick to which it is attached. The central portion of the platform is recessed from the outer edge for the admission and clearance of the in use.

drilling, pumping and other necessary appliances, and also to clear the upper beam 17 when the platform is in the upright position. This platform is provided with a safetyvrail 30 and also with a flexible rail 25 around the ed e for the greatersafety of the driller. The flexible rail at the outer or free edge of the platform is detachable so that the platform when raised can pass by the beam without interference. I

on the ends'of the beams are detachable end pieces 37- rigidly secured in position according to the requirements of space in the operations about the well. Each end piece comprises upper and lower plates 71, 72 connected at the sides to upright plates 73 and converging; toward their'outer ends. The plates f't'l, 72 fit 'over and under the upper and lower sides respectively of the ends' 'of 'the walking beam. ,All the end pieces 37* are so detachable, and they are made of similar form and interchangeable, so'th-at any end'piece may be used on either end of any beam. Thebearns-are also interchangeable, and, in. case it is desired to use any one beam 'in any beam'bearing, it can be hoisted from one level to another. The upper beam can be removed, if necessary, by taking oil the top of the sams'on post, and. can be used in another derrick or similar design. Thus, in using a' number of derricks of thlsconstruction, it is necessary 'to install as'a general rule only one beam for each derrick, reserving an extra beam for-use in anv one of the derricks bv installing! the same when desired, or for other operations than that' of pumping;

naaaeao The "advantage of employing a 'inultiple svstem of walking beams at diflerent levels is thatthe derrick end ofthe beam may be at such a height as to permit the insertion of at least two additional standard joints, or more shorter joints, of the casing above the cellar floor, thereby facilitating drilling through cavy or other formations, and also to permit the same equipment to be subse-- quently used for pumping in oil wells, thus saving time and expense.

38 indicates a swingingv jib crane placed upon an upright post 39 braced by a horizontal brace 40 from the derrick and furnished with a traveling trolley, and a series of eye-bolts 4:1 or anchors, fastened at intervals along the vertical post 39 for attaching hoisting tackle 42 secured to anchors 4:53 on the walking beams. As an optional design there may be employed a swinging crane, similar to that shown at 38 but connected with the frame work on the side of the derrick opposite to the swinging jib crane 38.

The rods tothe brakes of the calf-wheel 50, bull wheel 51, sand reelv control 52, sprocket clutch 53, reverse control 54:, links andsteam control 56 have extensions 59 to points waist high above the upper platform level, so that the driller can have entire control of all equipment and machinery while working on said upper platform.v

Rollers 58 across the opening at the hinged end or ends of the latform or platforms prevent abrasion of the casing lines, hoisting lines and the like.'

60 indicates a hanger arm the middle portion of which is formed of pairs of angle ironsfil, between which are interposed brace rods 62 riveted or bolted to each other and to the angle irons in lattice form. Between the end portions of the angle irons 'arein'serted plates 63 and on opposite sides of saidlplates 63 at both ends, and abutting against the .angle irons, are plates 64, to which, and to the angle irons, are riveted, as shown at 65, plates The plates 63 and 64 are riveted together by e untr nk rivets 67. The plat/es 63'and 64 have formed therethrough at the upper end a circular hole '68 and at the lower end a longitudinal sioteag f i Tn operation two of these improved. long: link arms are ordinarily used to sup or the casing. The lower slotted ends of'the arms support a' 'spider, trunniononothen clamping device passing to the top of the, casing, and the upper ends of said 'arms are suspended from a pin or hearing, which in. turn is hung from the calf-wheel line. This constructionpermits thecasing to ,be rai or lowered at will, but does not permit of any buckling orbending of the casing, or ofthe hanger, due to the downward motion of the casing being temporarily retarded 1 30- rec when sin the casin into the well, inasmuch as slack, which i ould ordinarily appear by paying oil" I would be taken up by the length of the slots at the lower ends of said long link arms.

The design of these, arms is such that they I can be easily handled, owing to their co1nwhich they are made of piece. Longer casing hangers permit the casing to be more readily drawn outto'clean pactness and lightness, and yet can be easily manufactured. At the same time they are economical, rigid and strong, and the parts can be easily renewed. Moreover, this construction permits of the hanger being easily made. in sections which can be bolted or riveted together in the derrick chamber, and

thus permits hangers to be used of much greater length than-with'th old style, in a single forged the well andexpedite the drilling operation, and allows the completion of the well in a shorter time, thereby reducing theexpense of drilling.

A further advantage of this construction resides in the ease of renewal of any broken parts, which can be replaced in the field, the repaired arms being as vst-rong, .synimetrical, and homogeneous as originally fabricated. This advantage is increased by the fact that it is extremely 'dificult to repair forged hangers, if breakage occurs, since facilities for searfing and welding the forgings are not available in the oil fields.

Furthermore, the time for such welding is necessarily considerable,

thereby causing delay the drilling operations, with a corresponding accumulation of expense. in fact, the broken would ordinarily be thrown away with re sulting loss, whereas the muctural steel arms can be quickly renewed if necessary.

A further advantage resides in the fact that my improved hanger weighs about onethird or one-half of the weight of the old upper and lower walking 'a samson post at the side of said style forged hanger, at the same time having the same tensile strength with increased transverse stifiness. Thisallows the hanger and casing to be manipulatedmore easily than the old style of heavy forged hangers. I claim I 1. In combinahlon with a derrick frame, frame, upper and lower wallnng beams removably pivoted on mid post, and a platform between the two walking 2. In combination with a derrick frame, at the side of said hame, beams removably pivoted on mid post, and a platform between the two. w beams and movably supported. by said derrick, an edge of the asamsonpom the calf-wheel line,-

parts of the forged hanger beams and movably supported by said derrick. I

platform being recessed at tion. a

3. In combination with a derrick frame, a samson post at the side of said frame.

its central porinterchangeable upper and lower walking beams pivotedon said post, and a platform between the two walking beams and movably supported by said derrick, the free edge of the platform being recessed at its central rick and extending inwardly therefrom,

a counter-weighted platform between the walking beams and hinged upon said support, and means for supporting the outer edge of the platform, said outer edge being recessed at its central portion.

6. In combination with a derrick frame, a samson post at the sideof said frame,- interchangeable upper and lower. walhng beams pivotally supported on said post, and

detachable end pieces on the end of the beams. 5

7. In combination, a samson post, pairs of reinforcing opiates secured to the sides ofsaid post, angle plates secured to said reinforcing plates, journal boxes supported by said angle plates. a walking beam, trunnion bearings rigid with said walking beam, said walln ng beam being longitudinally slotted and extending through the samson post, trunnions in said bearings and boxes, and strengthening plates secured to said samson post above'and below the walking beam.

8. In combination,a mmson post, having a lower section, an upper section, a slide frame securing the upper section to the lower section, and bars bracing the upper section, said upper section and bars being removable simultaneously, and upper and lower walhng beams pivoted on the said sections respectively.

In testimony whereof l have hereunto set my hand witnesses I RQBERT lt. POLLAK. Witnesses: I

. Geo. K. Aunmsou, Cues. W. Become in the presence of two subscribing 

